1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2019 Rubicon Communications, LLC (Netgate)
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
9 * NASA Ames Research Center, and by Frank van der Linden.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include <sys/cdefs.h>
34 /* Driver for the Marvell 88e151x gigabit ethernet PHY. */
35
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/kernel.h>
39 #include <sys/socket.h>
40 #include <sys/errno.h>
41 #include <sys/module.h>
42 #include <sys/bus.h>
43
44 #include <net/if.h>
45 #include <net/if_media.h>
46
47 #include <dev/mii/mii.h>
48 #include <dev/mii/miivar.h>
49 #include <dev/mii/mv88e151xreg.h>
50 #include "miidevs.h"
51
52 #include "miibus_if.h"
53
54 static int mv88e151x_probe(device_t);
55 static int mv88e151x_attach(device_t);
56
57 static device_method_t mv88e151x_methods[] = {
58 /* device interface */
59 DEVMETHOD(device_probe, mv88e151x_probe),
60 DEVMETHOD(device_attach, mv88e151x_attach),
61 DEVMETHOD(device_detach, mii_phy_detach),
62 DEVMETHOD(device_shutdown, bus_generic_shutdown),
63 DEVMETHOD_END
64 };
65
66 static driver_t mv88e151x_driver = {
67 "mv88e151x",
68 mv88e151x_methods,
69 sizeof(struct mii_softc)
70 };
71
72 DRIVER_MODULE(mv88e151x, miibus, mv88e151x_driver, 0, 0);
73
74 static int mv88e151x_service(struct mii_softc *, struct mii_data *, int);
75 static void mv88e151x_status(struct mii_softc *);
76
77 static const struct mii_phydesc mv88e151xphys[] = {
78 MII_PHY_DESC(xxMARVELL, E1512),
79 MII_PHY_END
80 };
81
82 static const struct mii_phy_funcs mv88e151x_funcs = {
83 mv88e151x_service,
84 mv88e151x_status,
85 mii_phy_reset
86 };
87
88 static int
mv88e151x_probe(device_t dev)89 mv88e151x_probe(device_t dev)
90 {
91
92 return (mii_phy_dev_probe(dev, mv88e151xphys, BUS_PROBE_DEFAULT));
93 }
94
95 static int
mv88e151x_attach(device_t dev)96 mv88e151x_attach(device_t dev)
97 {
98 const struct mii_attach_args *ma;
99 struct mii_softc *sc;
100 uint32_t cop_cap, cop_extcap;
101
102 sc = device_get_softc(dev);
103 ma = device_get_ivars(dev);
104
105 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &mv88e151x_funcs, 0);
106
107 PHY_RESET(sc);
108 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & sc->mii_capmask;
109 cop_cap = sc->mii_capabilities;
110 if (sc->mii_capabilities & BMSR_EXTSTAT) {
111 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
112 cop_extcap = sc->mii_extcapabilities;
113 }
114 device_printf(dev, " ");
115 if (MII_MODEL(ma->mii_id2) == MII_MODEL_xxMARVELL_E1512)
116 sc->mii_capabilities &= ~BMSR_ANEG;
117 mii_phy_add_media(sc);
118 if (MII_MODEL(ma->mii_id2) == MII_MODEL_xxMARVELL_E1512) {
119 /* Switch the fiber PHY and add the supported media. */
120 PHY_WRITE(sc, MV88E151X_PAGE, MV88E151X_PAGE_FIBER);
121 PHY_RESET(sc);
122 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & sc->mii_capmask;
123 if (sc->mii_capabilities & BMSR_EXTSTAT)
124 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
125 sc->mii_flags |= MIIF_NOISOLATE;
126 printf(", ");
127 mii_phy_add_media(sc);
128
129 /* Switch back to copper PHY. */
130 PHY_WRITE(sc, MV88E151X_PAGE, MV88E151X_PAGE_COPPER);
131 sc->mii_flags &= ~MIIF_NOISOLATE;
132 sc->mii_capabilities = cop_cap;
133 sc->mii_extcapabilities = cop_extcap;
134 }
135 printf("\n");
136
137 MIIBUS_MEDIAINIT(sc->mii_dev);
138
139 mii_phy_setmedia(sc);
140
141 /* Enable the fiber PHY auto negotiation. */
142 if (MII_MODEL(ma->mii_id2) == MII_MODEL_xxMARVELL_E1512) {
143 PHY_WRITE(sc, MV88E151X_PAGE, MV88E151X_PAGE_FIBER);
144 PHY_WRITE(sc, MII_BMCR, BMCR_RESET | BMCR_AUTOEN |
145 BMCR_STARTNEG | BMCR_FDX | BMCR_S1000);
146 PHY_WRITE(sc, MV88E151X_PAGE, MV88E151X_PAGE_COPPER);
147 }
148
149 return (0);
150 }
151
152 static int
mv88e151x_service(struct mii_softc * sc,struct mii_data * mii,int cmd)153 mv88e151x_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
154 {
155 switch (cmd) {
156 case MII_POLLSTAT:
157 break;
158
159 case MII_MEDIACHG:
160 mii_phy_setmedia(sc);
161 break;
162
163 case MII_TICK:
164 if (mii_phy_tick(sc) == EJUSTRETURN)
165 return (0);
166 break;
167 }
168
169 /* Update the media status. */
170 PHY_STATUS(sc);
171
172 /* Callback if something changed. */
173 mii_phy_update(sc, cmd);
174 return (0);
175 }
176
177 static void
mv88e151x_fiber_status(struct mii_softc * phy)178 mv88e151x_fiber_status(struct mii_softc *phy)
179 {
180 struct mii_data *mii = phy->mii_pdata;
181 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
182 int bmsr, bmcr, anlpar; //, gtcr, gtsr;
183 uint32_t reg;
184
185 mii->mii_media_status = IFM_AVALID;
186 mii->mii_media_active = IFM_ETHER;
187
188 /* Switch to the fiber PHY. */
189 PHY_WRITE(phy, MV88E151X_PAGE, MV88E151X_PAGE_FIBER);
190
191 reg = PHY_READ(phy, MV88E151X_FIBER_STATUS);
192 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
193 if (reg & MV88E151X_STATUS_LINK)
194 mii->mii_media_status |= IFM_ACTIVE;
195 bmcr = PHY_READ(phy, MII_BMCR);
196 if (bmcr & BMCR_ISO) {
197 mii->mii_media_active |= IFM_NONE;
198 mii->mii_media_status = 0;
199 PHY_WRITE(phy, MV88E151X_PAGE, MV88E151X_PAGE_COPPER);
200 return;
201 }
202
203 if (bmcr & BMCR_LOOP)
204 mii->mii_media_active |= IFM_LOOP;
205
206 if (bmcr & BMCR_AUTOEN) {
207 /*
208 * NWay autonegotiation takes the highest-order common
209 * bit of the ANAR and ANLPAR (i.e. best media advertised
210 * both by us and our link partner).
211 */
212 if ((bmsr & BMSR_ACOMP) == 0) {
213 /* Erg, still trying, I guess... */
214 mii->mii_media_active |= IFM_NONE;
215 PHY_WRITE(phy, MV88E151X_PAGE, MV88E151X_PAGE_COPPER);
216 return;
217 }
218
219 anlpar = PHY_READ(phy, MII_ANAR) & PHY_READ(phy, MII_ANLPAR);
220 if (anlpar & ANLPAR_X_FD)
221 mii->mii_media_active |= IFM_1000_SX | IFM_FDX;
222 else if (anlpar & ANLPAR_X_HD)
223 mii->mii_media_active |= IFM_1000_SX | IFM_HDX;
224 else if (reg & MV88E151X_STATUS_LINK &&
225 reg & MV88E151X_STATUS_SYNC &&
226 (reg & MV88E151X_STATUS_ENERGY) == 0) {
227 if ((reg & MV88E151X_STATUS_SPEED_MASK) ==
228 MV88E151X_STATUS_SPEED_1000)
229 mii->mii_media_active |= IFM_1000_SX;
230 else if ((reg & MV88E151X_STATUS_SPEED_MASK) ==
231 MV88E151X_STATUS_SPEED_100)
232 mii->mii_media_active |= IFM_100_FX;
233 else
234 mii->mii_media_active |= IFM_NONE;
235 if ((reg & MV88E151X_STATUS_SPEED_MASK) != 0 &&
236 (reg & MV88E151X_STATUS_FDX))
237 mii->mii_media_active |= IFM_FDX;
238 } else
239 mii->mii_media_active |= IFM_NONE;
240
241 if ((mii->mii_media_active & IFM_NONE) == 0)
242 phy->mii_flags |= MIIF_IS_1000X;
243 if ((mii->mii_media_active & IFM_FDX) != 0)
244 mii->mii_media_active |= mii_phy_flowstatus(phy);
245 } else
246 mii->mii_media_active = ife->ifm_media;
247
248 if ((mii->mii_media_status & IFM_ACTIVE) == 0)
249 phy->mii_flags &= ~MIIF_IS_1000X;
250
251 /* Switch back to copper PHY. */
252 PHY_WRITE(phy, MV88E151X_PAGE, MV88E151X_PAGE_COPPER);
253 }
254
255 static void
mv88e151x_status(struct mii_softc * phy)256 mv88e151x_status(struct mii_softc *phy)
257 {
258 struct mii_data *mii = phy->mii_pdata;
259
260 mv88e151x_fiber_status(phy);
261 if (mii->mii_media_status & IFM_ACTIVE)
262 return;
263 ukphy_status(phy);
264 }
265